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Jesko Hüttenhain

I got my PhD from TU Berlin in 2017. I am still mostly interested in classical & complex algebraic geometry, geometric invariant theory and potential applications to complexity theory.

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63 Abstract nonsense proof of snake lemma Feb 26 '13
42 Projection is an open map Nov 29 '12
32 Proving that free modules are flat (without appealing projective modules) May 31 '13
24 Why the transpose of a singular matrix is singular? Jul 24 '18
21 How should I think about very ample sheaves? Feb 27 '13
19 Simple example of an ample line bundle that is not very ample Oct 28 '13
15 How many non-increasing sequences are there over the natural numbers? Feb 9 '15
14 Geometric meaning of completion and localization Apr 3 '13
14 Can a basis for a vector space be made up of matrices instead of vectors? Mar 5 '12
13 Irreducible polynomial means no roots? Oct 27 '12
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